Great Barrington — For a nation in the grip of unrest, it was a message of harmony sprinkled with words of caution against inaction.

There was also music provided by the Railroad Street Dreamers and renowned gospel musician Michael Whitney Brown. But more than anything, it was a Sunday afternoon filled with the perspective of youth leadership and teamwork in the Black Lives Matter movement, as exemplified by a new downtown mural that is the product of the group-mentoring program of the Railroad Street Youth Project.